Ultraviolet spectroscopy of LSI + 61 303

Details Ultraviolet spectroscopy of LSI + 61 303 Ultraviolet spectroscopy of LSI + 61 303

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.203..801h&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 203, May 1983, p. 801-810.

Astronomy and Astrophysics

Astronomy

23

B Stars, Early Stars, Radio Sources (Astronomy), Stellar Spectra, Ultraviolet Spectroscopy, X Ray Sources, Continuous Spectra, Emission Spectra, Interstellar Extinction, Iue, K Stars, Resonance Lines, Stellar Temperature, Stellar Winds

Scientific paper

New IUE low-resolution spectroscopy of the X-ray/radio source LSI+61°303 is presented and discussed, and previously reported data critically reassessed. There is no strong evidence for continuum variability; in particular, eight spectra covering the 1200-1950 Å region show a scatter of only ≡3 per cent. There is some variability in the emission lines, possibly related to the star's shell activitiy. The C IV resonance doublet reveals a stellar wind with a terminal velocity of ≡1400 km s-1. The data are consistent with a 10 R_sun;, Teff ≅ 15500K star at 2.3 kpc, reddened by E(B-V) = 0.75.

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